/*
 * Copyright [2013-2021], Alibaba Group Holding Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.polardbx.druid.sql.ast.statement;

import com.alibaba.polardbx.druid.sql.ast.SQLExpr;
import com.alibaba.polardbx.druid.sql.ast.SQLStatementImpl;
import com.alibaba.polardbx.druid.sql.visitor.SQLASTVisitor;

/**
 * ALTER SYSTEM CHANGE_ROLE [targetType] [target] TO [role]
 * role: LEARNER/FOLLOWER/LEADER
 * targetType: ZONE/NODE
 * target: dn id/zone id
 * @author moyi
 * @since 2021
 */
public class SQLChangeRoleStatement extends SQLStatementImpl implements  SQLAlterStatement {

    private SQLExpr targetType;
    private SQLExpr target;
    private SQLExpr role;

    public SQLExpr getTargetType() {
        return targetType;
    }

    public void setTargetType(SQLExpr targetType) {
        this.targetType = targetType;
    }

    public SQLExpr getTarget() {
        return target;
    }

    public void setTarget(SQLExpr target) {
        this.target = target;
    }

    public SQLExpr getRole() {
        return role;
    }

    public void setRole(SQLExpr role) {
        this.role = role;
    }

    @Override
    protected void accept0(SQLASTVisitor visitor) {
        visitor.visit(this);
        visitor.endVisit(this);
    }

}
